Natural Convection Heat Transfer Coefficient Of Air. Convective heat transfer calculator. Natural convection flow in a vertical channel containing inside objects exists in a number of advance technological applications including heat transfer from electronic circuits refrigerators heat exchangers power station fueling components chillers and residential ventilation etc.
Convective heat transfer calculator. Determine the convective heat transfer coefficient for the top surface of the same furnace considered in q1 considering natural convection in place of forced convection. Air velocity air temperature geometry of the surface in contact with the air etc.
The number of fins and the heat transfer coefficient for the optimum fin spacing case are 15 fins s t w n mk w s k h opt 131 508 the rate of natural convection heat transfer becomes.
For naturalfree convection the value. Raxn the values of the constants c and n depend on the geometry of the surface and the flow regime which is characterized by the range of the rayleigh number. For the case of a horizontal plate with the heated side down the simplified formula underpredicts h by 13 to 15. Density ρ kgm 3.